Re: [Libusb-devel] system image, pendrive, dd and optimal transfer size

[Alan S. <st...@ro...>]

On Mon, 11 Oct 2010, Tomek CEDRO wrote:

> Dear libusb developers,
> 
> As you have great insight into USB transfers, please advise on optimal
> pendrive transfer size. Is it 10240 as stated in FreeBSD's
> announcement (I have seen 64k in other place)?
> 
> # dd if=8.1-RELEASE-amd64-memstick.img of=/dev/da0 bs=10240 conv=sync

The size you use in the dd command doesn't much matter.  It affects 
only the transfers made between dd and the operating system, not the 
tranfers between the operating system and the pendrive.

Alan Stern